With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.142374-19-4,tert-Butyl 4-(2-oxoethyl)piperidine-1-carboxylate,as a common compound, the synthetic route is as follows.
To a solution of compound F1 (15 g, 66 mmol) in THF (50 mL) was added phenyltrimethylammonium tribromide (37.2 g, 99 mmol) at 0. The mixture was stirred at 0 under N 2 for 1 hours. The mixture was quenched with water (50 mL) and extracted with EtOAc (200 mL ¡Á 2) . The organic phase was washed with brine (100 mL) , dried over anhydrous Na 2SO 4, concentrated to give the residue (7.5 g) . The residue was dissolved in ethanol (200 mL) was added compound F2 (7.5 g, 99 mmol) . The mixture was stirred at 80 for 3 h. The mixture was cooled to room temperature and concentrated under reduced pressure to afford the crude product, which was purified by silica gel chromatography (elution gradient: EA/PE, 1/1, v/v) . Pure fractions were evaporated to dryness to afford compound F3 (10 g) as a pale-yellow solid, yield: 53.5%. 1H NMR (400 MHz, CDCl 3) : delta ppm 1.48 (s, 9H) , 1.53-1.60 (m, 2H) , 1.90-1.96 (m, 2H) , 2.77-2.85 (m, 3H) , 4.17 (s, 2H) , 6.78 (s, 1H) . LCMS: Rt = 1.20 min, MS Calcd.: 283.1, MS Found: 283.9 [M+H] +.
142374-19-4, The synthetic route of 142374-19-4 has been constantly updated, and we look forward to future research findings.
Reference£º
Patent; ZHUHAI YUFAN BIOTECHNOLOGIES CO., LTD; LIAO, Xuebin; (208 pag.)WO2019/206049; (2019); A1;,
Piperidine – Wikipedia
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